HIGH
ntp: crash with crafted logconfig configuration command
Published Jul 21, 2017
7.5
HIGHCVSS 3.0
EPSS 5.54%
Description
The log_config_command function in ntp_parser.y in ntpd in NTP before 4.2.7p42 allows remote attackers to cause a denial of service (ntpd crash) via crafted logconfig commands.
Affected products
No data.
Configuration 1
OR
- 21
- 22
Configuration 2
OR
- 11
- 11
- 10
- 11
- 11
- 2.1
- 2.1
- 5
Configuration 3
OR
- 6.0
- 7.0
- 6.0
- 7.0
- 6.0
- 7.0
- 6.0
- 7.0
Configuration 4
OR
- 7.0
- 8.0
Configuration 5
OR
- 12.04
- 14.04
- 15.04
- 15.10
No data.
Red Hat Enterprise Linux 6
ntp-0:4.2.6p5-10.el6
Fixed · RHSA-2016:0780
Red Hat Enterprise Linux 7
ntp-0:4.2.6p5-25.el7
Fixed · RHSA-2016:2583
Red Hat Enterprise Linux 5
ntp
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | ntp-0:4.2.6p5-10.el6 | Fixed | RHSA-2016:0780 |
| Red Hat Enterprise Linux 7 | ntp-0:4.2.6p5-25.el7 | Fixed | RHSA-2016:2583 |
| Red Hat Enterprise Linux 5 | ntp | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
5.54% 0.05536
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.05536
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (28 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 5.54% (0.05536) | 92.58th | v5 (v2026.06.15) |
| Jun 15, 2026 | 5.58% (0.05581) | 91.86th | v5 (v2026.06.15) |
| Feb 18, 2026 | 8.41% (0.08410) | 92.13th | v4 (v2025.03.14) |
| Jan 25, 2026 | 12.40% (0.12400) | 93.69th | v4 (v2025.03.14) |
| Dec 28, 2025 | 19.36% (0.19357) | 95.17th | v4 (v2025.03.14) |
| Dec 27, 2025 | 11.61% (0.11611) | 93.45th | v4 (v2025.03.14) |
| Dec 14, 2025 | 19.36% (0.19357) | 95.15th | v4 (v2025.03.14) |
| Oct 28, 2025 | 13.44% (0.13437) | 93.89th | v4 (v2025.03.14) |
| Oct 27, 2025 | 11.61% (0.11611) | 93.36th | v4 (v2025.03.14) |
| Oct 13, 2025 | 13.44% (0.13437) | 93.86th | v4 (v2025.03.14) |
| Oct 1, 2025 | 15.51% (0.15514) | 94.45th | v4 (v2025.03.14) |
| Mar 30, 2025 | 11.05% (0.11049) | 92.81th | v4 (v2025.03.14) |
| Mar 29, 2025 | 17.09% (0.17085) | 91.71th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.05% (0.11049) | 92.92th | v4 (v2025.03.14) |
| Dec 17, 2024 | 1.68% (0.01675) | 87.34th | v3 (v2023.03.01) |
| Oct 21, 2024 | 7.62% (0.07618) | 94.31th | v3 (v2023.03.01) |
| Jun 23, 2024 | 5.53% (0.05526) | 93.27th | v3 (v2023.03.01) |
| May 11, 2024 | 5.21% (0.05209) | 92.96th | v3 (v2023.03.01) |
| Jan 15, 2024 | 2.96% (0.02957) | 89.83th | v3 (v2023.03.01) |
| Jul 1, 2023 | 1.50% (0.01496) | 85.04th | v3 (v2023.03.01) |
| May 8, 2023 | 1.06% (0.01060) | 81.89th | v3 (v2023.03.01) |
| Mar 10, 2023 | 0.94% (0.00941) | 80.71th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.92% (0.00919) | 80.45th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.36% (0.04358) | 88.02th | v2 (v2022.01.01) |
| Feb 13, 2023 | 4.36% (0.04358) | 87.63th | v2 (v2022.01.01) |
| Feb 3, 2023 | 2.69% (0.02686) | 82.44th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.36% (0.04358) | 86.83th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.36% (0.04358) | 70.59th | v2 (v2022.01.01) |
Weaknesses (2)
References (23)
- http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=4c4fc141LwvcoGp-lLGhkAFp3ZvtrA x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.html vendor-advisoryx_refsource_FEDORAThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html vendor-advisoryx_refsource_SUSEThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-0780.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://rhn.redhat.com/errata/RHSA-2016-2583.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.debian.org/security/2015/dsa-3388 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.openwall.com/lists/oss-security/2015/08/25/3 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/76475 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-2783-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2015-5194 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1254542 x_refsource_CONFIRMIssue TrackingPatch
- https://github.com/ntp-project/ntp/commit/553f2fa65865c31c5e3c48812cfd46176cffdd27 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2015-5194
- https://www-01.ibm.com/support/docview.wss?uid=isg3T1024157 x_refsource_CONFIRMThird Party Advisory
- https://www-01.ibm.com/support/docview.wss?uid=swg21985122 x_refsource_CONFIRMThird Party Advisory
- https://www-01.ibm.com/support/docview.wss?uid=swg21986956 x_refsource_CONFIRMThird Party Advisory
- https://www-01.ibm.com/support/docview.wss?uid=swg21988706 x_refsource_CONFIRMThird Party Advisory
- https://www-01.ibm.com/support/docview.wss?uid=swg21989542 x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-5194
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Jul 21, 2017
Updated Aug 6, 2024
Reserved Jul 1, 2015
Link CVE-2015-5194
CISA Vulnrichment
Updated n/a